baber/WOPTO huggingface dataset:
Patent GB-1145498-A (GB)
Title: Protecting building panels during erection
IPC: E04G21/30
Filed: 1965-11-09
Abstract: 1,145,498. Lifting attachments. LONDON COUNCIL, GREATER., J. W. DAVIDSON, and C. R. BROOKS. 4 Nov., 1966 [9 Nov., 1965], No. 47572/65. Heading B8H. To protect prefabricated building panels during erection of a building a pair of wheels are secured to the bottom of channel guides which support the panels and the panels are lifted into position with the wheels running up that part of the building which has been erected. The wheels are made of neoprene sponge and are spaced to engage the grooves between adjacent panels.
Patent GB-1388902-A (GB)
Title: Facsimile receivers
IPC: H04N1/00
Filed: 1972-02-16
Abstract: 1388902 Facsimile receiver GRAPHIC SCIENCES Inc 16 Feb 1972 [16 Feb 1971] 47680/74 Divided out of 1388901 Heading H4F The subject-matter of this Specification is identical with that described in Specification 1,388,901, but the claims are directed towards a facsimile receiver.
Patent GB-1090078-A (GB)
Title: Improvements relating to electro-magnetic pumps
Inventor: ARMSTRONG DONALD STUART
IPC: H02K44/06
Filed: 1963-12-03
Abstract: 1,090,078. Pumps operating by electromagnetic interaction with fluids. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Dec. 1, 1964 [Dec. 3, 1963], No. 47687/63. Heading H2A. An electromagnetic interaction pump comprises two concentric cylindrical walls 2, 3 together defining an annular duct 1 for the pumped conductive fluid and a concentric magnetic structure 6 which carries a polyphase winding in slots 7 which are skew to the longitudinal pumping direction. The magnetic structure 6 produces a helically rotating magnetic field and thus induces helical motion of the fluid in the duct so that it travels from inlet 4 to outlet 5. A magnetic return path 9 is provided on the opposite side of the duct and conductive end rings 10, 11 may be provided adjacent the return path. In a modification structure 6 may be outside the duct and the return path inside and the latter may also carry windings in skewed slots. The pumping rate may be altered by axially moving, either two magnetic structures each with the slots skewed at different angles or an elongated structure with the slot angle changing along its length, to co-operate with the duct. A further modification where the angle of skew of the slots can be varied is also disclosed. The duct walls may be of metal or ceramic.
Patent GB-1433398-A (GB)
Title: Acoustic surface-wave devices
IPC: H03H9/64
Filed: 1973-10-16
Abstract: 1433398 Acoustic surface-wave filters MULLARD Ltd 16 Oct 1973 48081/73 Heading H3U An acoustic surface-wave filter comprises a body 1 of piezoelectric material carrying a pair of parallel-connected interdigital input transducers 20, 21 having equal acoustic apertures and adapted to launch surface-waves inwards in a track T1, a pair of parallel-connected interdigital output transducers 30, 31 having equal acoustic apertures and adapted to receive surface-waves passing outwards in a track T2, and a surface-wave coupling means MSC comprising an array of parallel conductive strips 15 arranged to transfer the energy of the waves in the track T1 into acoustic waves in the track T2. Since spurious bulk waves are not transmitted by MSC, the filter stop-band characteristic is stated to be improved. As shown the tracks T1, T2 are parallel and adjacent, and the two pairs of transducers have equal apertures A/2. Capacitive breakthrough between transducers is prevented by earthing one input terminal 9 and output terminal 12, and/or by earthed shielding strips. Other connection arrangements are envisaged. The transducers 21 and 31 may be interchanged or all the transducers may be length weighted like the transducers 20, 21.
Patent GB-1280862-A (GB)
Title: Improvements in or relating to gas turbine engines
Inventor: HUGHES ERIC
IPC: F02C7/10
Filed: 1969-10-01
Abstract: 1280862 Gas turbine engines; pre-heating air supply ROLLS-ROYCE Ltd 24 Sept 1970 [1 Oct 1969] 48150/69 Heading F1G The invention relates to a gas turbine engine comprising a first heat exchanger in which air from the engine compressor is pre-heated, and a second heat exchanger in which a heat exchange fluid (such as sodium) is heated by heat exchange with the turbine exhaust gases, the heat exchange fluid passing to the first heat exchanger to heat the air from the compressor. The engine combustion equipment and the first heat exchanger are disposed around the engine compressor. The engine shown comprises an axial-flow compressor 14, combustion equipment 30 and a turbine 38 connected to drive the compressor also an external load by means (not shown). Air from the compressor discharges through annular diffuser 18 thence radially outwardly through the section 24b of the first heat exchanger 24 which is of annular form, then radially inwardly through the section 24a of the heat exchanger thence to the combustion equipment 30. Gases from the combustion equipment pass to the turbine 38 and discharge therefrom through diffuser 48, the exhaust gases then passing through second heat exchanger 50. The heat exchangers 24, 50 comprise tubes containing heat transfer medium and the two heat exchangers are inter-connected so that the transfer medium transfers heat from the turbine exhaust gases to the air passing to the combustion equipment.
Patent GB-1440593-A (GB)
Title: Filtering apparatus
IPC: B01D33/06
Filed: 1973-05-17
Abstract: 1440593 Separating particles from fluid; centrifugal separators DRESSER INDUSTRIES INC 17 May 1973 [12 June 1972]48257/75 Divided out of 1440592 Headings B1D and B2P Apparatus for separating particles from fluid comprises means for separating particles (e.g. oil) which are lighter than the fluid and means for separating particles which are heavier than the fluid, the latter means comprising substantially radial screen assemblies 24 carried by rotatable housing 10, inlet duct 18, ducts 42 for discharging concentrate which has passed under centrifugal action along the screen assemblies 24, to common duct 44, and ducts 36 for discharging filtered fluid to container 40. The screen assemblies 24 may comprise screens 28, 30 supported by an internal structure comprising a grooved plate and two screens. The heavy particle separating means may be located downstream of a light particle separating means which uses chemicals. Alternatively the apparatus of Fig. 1 may be modified to include a duct 130 (Fig. 5A) for separating light particles from the housing 10. The heavy particle separating means may comprise horizontal or frusto-conical screens. The screens may be made of woven stainless steel, cellulose acetate, polyethylene or nylon.
Patent GB-1022006-A (GB)
Title: Process for the production of age-hardened extrusions, press forgings and forgings from high-strength aluminium alloys of the alznmgcu type
IPC: C22C21/10
Filed: 1963-12-10
Abstract: An alloy containing in percentage by weight .Zn.5.0-7.5 .Mg.1.5-2.5 .Cu.0.6-1.5 .Cr.0.05-0.3 .Ag.0-0.8 .Mn.0-0.4 .Fe.0-0.4 .Si.0-0.4 .Ti.0-0.2 .Al.balance is held at an elevated temperature until the primary copper-rich phase is completely dissolved, and is then, after fabrication, solution treated, quenched and precipitation hardened at 140-180  DEG C.  The homogenizing treatment is preferably carried out at 460-490  DEG C., and the solution treatment at 460-480  DEG C. Quenching may be into water at 40-80  DEG C.
Patent GB-1017312-A (GB)
Title: Bellows
Inventor: WILKINSON SAMUEL CLIFFORD WALT
IPC: F16J3/04
Filed: 1963-12-11
Abstract: 1,017,312. Moulding sealing elements. CRANE PACKING Ltd. Dec. 7, 1964 [Dec. 11, 1963], No. 48876/63. Heading B5A. [Also in Division F2] A reinforced non-metallic bellows 4, which may be used as a fluid seal between relatively movable parts or to form an expansion joint in non-metallic pipework, is made by forming a tubular body of substantially uniform wall thickness containing reinforcing material in restricted regions adjacent its inner and/or outer surface and machining away or cutting the body to leave a bellows whose pleats contain reinforcing material at their inner and/or outer tips only. A cylindrical body of P.T.F.E. with inner and outer diameters indicated at 1 and 2 respectively is mounted on a core pin (not shown) and wrapped with several layers of glass fibre fabric impregnated with P.T.F.E. so that its outer diameter is increased to 3. The assembly is then subjected to a moulding process and the resulting block machined to form the bellows shown with the outer tip of each convolution reinforced with glass cloth. When the bellows is to be used as part of a mechanical seal the original body may incorporate glass or metal powder as a filler adjacent its ends. In the seal in Fig. 2 (not shown), a bellows 6 made in accordance with the invention has a seal member 8 formed integrally therewith which is reinforced with glass fibre throughout its radial thickness and urged into contact with a stationary seat 9 by a helical spring 10. The bellows is surrounded by a metal sleeve 12 which may normally be omitted. In a modification, the member 8 is replaced by a separate carbon ring.
Patent GB-1025478-A (GB)
Title: Hair dryer air blower
IPC: A45D20/18
Filed: 1963-12-11
Abstract: 1,025,478. Centrifugal blowers. SUNBEAM CORPORATION. Dec. 11, 1963 [May 24, 1963], No. 48961/63. Heading F1C. [Also in Division A5] In a centrifugal blower unit the impeller and motor chambers are made as a casing of integral construction and the motor is supported on integral projections on this casing. The casing is preferably made as a moulding of a plastics material having a drum-like motor housing 18, Fig. 5, positioned above an annular panel 10 which has a depending flange 11 so that it forms, with a cover plate 17, a chamber for the impeller 28. The impeller is carried directly on the motor spindle 27 and the motor 22 is hung on bosses 20 formed on the upper portion 19 of the cover member. Air enters the casing through apertures 31 and is drawn past the motor by the impeller, being subsequently expelled through a tangential outlet 15, Fig. 4 (not shown), to the hose 32. A heating element 33 is located in the outlet 15 and, to avoid waste space, the triangular cavity between the outlet 15 and the interior wall 14 of the impeller chamber is used to contain the control switch.
Patent GB-1474570-A (GB)
Title: Safety devices for electric circular saws
IPC: B27G19/04
Filed: 1974-11-15
Abstract: 1474570 Machinery; safety devices MAKITA ELECTRIC WORKS Ltd 15 Nov 1974 [15 Nov 1973] 49478/74 Heading F2J A portable circular saw having the usual guard cover 8 turnable about the axis of a circular saw blade 3, to expose the blade 3 to a timber workpiece 24, includes an auxiliary switch 12 which is connected in series with an operators handle switch 7 to the driving motor 1 of the saw blade 3, the switch 12 being connected by a lever arrangement 11, 13, 15 to the turnable cover 8. The arrangement is such that the saw cannot be started by the manual switch 7 until the cover encounters the workpiece and the resulting opening movement of the cover 8 conditions the auxiliary switch 12 to start the motor 1 whilst movement of the cover 8 in the opposite, i.e. closing direction conditions the switch to stop the motor 1, the arrangement providing instant shutdown of the driving motor 1 in the event of "kick-back" &c. when the saw blade meets increased torque resistance such as a knot &c., in the timber. As shown, the turnable cover 8 frictionally engages a rubber pad 14 on the lever 15 arranged fast on one end of a turnable rod 11 which at its other end carries the lever 13 arranged adjacent the auxiliary switch 12, the lever 15 being restricted in its turning movement by limit stops 16, 17, the rubber pad 14 sliding on the cover 8 during further movement of the cover after the lever 15 has been moved between the stops 16, 17. When the cover 8 is opened it turns the lever 15, via the friction rubber pad 14, between the stops 17, 16 to turn the lever 13 to engage and close the switch 12 for completing the circuit (Fig. 3) to the motor 1 for starting the saw blade 3. When, at any time, the cover 8 moves in the opposite, i.e. closing direction it turns the lever 15 back from stop 16 to 17 to open the auxiliary switch 12 and hence stop the motor 1. In a similar alternative embodiment of Figs. 4 and 5 (not shown), the auxiliary switch (112) is released, to close the switch (112) by the friction operated lever/ cover arrangement, on opening of the cover to start the motor.
Patent GB-1039967-A (GB)
Title: Polyimide coated fluorocarbon insulated wire
IPC: H01B3/30
Filed: 1964-12-07
Abstract: An electrical conductor has an insulating layer of a perfluoro-carbon polymer and a layer of a heterocyclic polymeric imide bonded to and surrounding the perfluorocarbon layer, the perfluorocarbon layer having been cleaned prior to the bonding of the polymeric imide to it.  The perfluorocarbon layer may also be chemically etched prior to bonding the polimide.  The layers may be applied from solution by pasing through a suitable bath:  a plurality of passes may be made. The solution may be heated, and the coatings are finally cured in an oven.  The perfluorocarbon polymer may be PTFE, polyhexafluoropropylene or copolymers of tetrafluorethylene and hexafluoropropylene; the polyimide may be a poly pyromellitimide, a polyimide formed from naphthalene tetracarboxylic acid, or a polybenzimidazole; many specific examples of each types are given. In Examples, a conductor consisting of 19 strands of silver-plated copper wire, each coated with PTFE, is coated with a polyimide; 7 of the so-called conductors are then formed into a cable, shielded with silver-plated copper wire, further coated with PTFE and finally further coated with a polyimide.  In another construction, a conductor is coated with PTFE, polyimide, and more PTFE then heated to bond and cure the layers.
Patent GB-1063970-A (GB)
Title: Photographic cameras
IPC: G03B9/08
Filed: 1964-12-07
Abstract: 1,063,970. Photographic cameras. BELL & HOWELL CO. Dec. 7, 1964 [Dec. 6, 1963], No. 49612/64. Heading G2A. A camera comprises an objective and an adjustable diaphragm in front of the objective and is characterised by an area forming a neutral density filter on a lens of the objective, the filter being of a size substantially equal to the mean of the aperture sizes of the adjustable diaphragm. In a motion picture camera a vertically reciprocable shutter which covers the film between exposures reflects light passing through the lens and neutral density filter on to a photo-electric cell arranged to operate a galvanometer which moves diaphragm blades to adjust the lens aperture. It is stated that in a camera having an aperture range down to f 32 the use of the filter of a diameter equivalent to an f 8 aperture extends the aperture range down to the equivalent of f 64.
Patent GB-1444749-A (GB)
Title: Azo dyestuffs process for their preparation and their use for dyeing synthetic fibre materials
IPC: C09B29/085
Filed: 1973-10-24
Abstract: 1444749 Monoazo dyes HOECHST AG 24 Oct 1973 [24 Oct 1972] 49613/73 Heading C4P Novel dyestuffs of Formula I where R is a group of formula where R 4  and R 5  are hydrogen or alkyl optionally substituted by hydroxy, alkoxy or acyloxy or R 4  and R 5  each represent alkylene and together with the N atom form a 5- or 6- membered ring, with the proviso that R 4  and R 5  are not both hydrogen, R 1  and R 1 <SP>1</SP> are H, Cl, Br, alkyl, alkoxy, NO 2  or alkylsulphonyl, R 2  and R 3  are H, alkyl, hydroxyalkyl, cyanoalkyl, alkoxyalkyl, alkylcarbonyloxyalkyl, alkoxycarbonylalkyl, alkoxycarbonyloxyalkyl, phenyl or phenylalkyl, X is H, Br, Cl, alkyl or alkoxy, Y is H, Cl, Br, alkyl, alkoxy or acylamino and any alkyl or alkoxy group represented by R 1 , R 1 <SP>1</SP>, R 2 , R 3 , X or Y may be substituted may be prepared by azo coupling. Dyes of Formula I containing an acyloxy group in R 2  or R 3  may also be prepared by acylating the corresponding hydroxyalkyl compound. The dyes of Formula I and mixtures thereof give shades ranging from yellow to purple on a variety of synthetic fibre materials.
Patent GB-1072915-A (GB)
Title: Fluorescent brightening agents in colour print materials
Inventor: SAUNDERS DAVID GEORGE
IPC: C09K11/06
Filed: 1962-12-17
Abstract: 1,072,915. Photographic colour print materials. KODAK Ltd. Dec. 17, 1963 [Dec.17, 1962], No. 49688/63. Heading G2C. A photographic colour print material comprises a white reflecting support carrying three lightsensitive silver halide emulsion layers sensitive to red, green and blue respectively, in which the top emulsion layer contains a dispersion of an organic solvent in which is dissolved or dispersed a fluorescent compound which is insoluble in water. The emulsions may be arranged with the redsensitive emulsion at the top followed by the green- and then the blue-sensitive emulsions, and contain cyan-, magenta- and yellow-forming colour couplers respectively. The cyan-forming coupler may be dissolved or dispersed in the same organic solvent dispersion as the fluorescent compound or in a separate dispersion. Fluorescent compounds specified include those described in Specifications 1,072,916, 1,72,914 and 941, 048. The compounds act as brightening agents but also protect the lower layers against ultraviolet radiation.
Patent GB-1017540-A (GB)
Title: Improvements in or relating to nuclear fuel materials
Inventor: BELLAMY ROY GRAHAM
IPC: G21C3/00
Filed: 1963-12-17
Abstract: A uranium based alloy comprises 150-1500 p.p.m. Al, 100 to less than 200 p.p.m. Fe, the minimum total alloying addition being 350 p.p.m., the balance, apart from incidental impurities, being uranium.  The alloys are preferably quenched from the b -phase region (e.g. 720 DEG C.) and annealed in the a -phase region (e.g. 500  DEG C.).  The alloys are used as nuclear fuel elements.
Patent GB-1152375-A (GB)
Title: Direct Positive Photographic Materials
IPC: C08F28/00
Filed: 1966-11-08
Abstract: 1,152,375. Photographic direct-positive silver halide materials. EASTMAN KODAK CO. Nov.8, 1966 [Nov. 8, 1965], No.49932/66. Heading G2C. Photographic direct-positive silver halide materials showing reduced kink-mark desensitization comprise a support carrying a directpositive fogged silver halide emulsion layer in which the binder comprises a hydrophilic colloid and a water-insoluble vinyl polymer. Polymers specified are water-insoluble homopolymers and copolymers of acrylic acid, alkyl acrylates and alkyl methacrylates; including copolymers of alkyl acrylates with acrylic acid, copolymers of alkyl acrylates and methacrylates with a large number of specified vinyl monomers, copolymers of alkyl acrylates or methacrylates with acrylic acid and a sulphobetaine of the formula: - where R, R 2  and R 3  are each H or alkyl and R 1  and R 4  are saturated hydrocarbon radicals, and copolymers of alkyl acrylates or alkyl methacrylates with monomers of the formula: - where R is H or alkyl, R 1  is a divalent hydrocarbon radical or a divalent aliphatic hydrocarbon radical in which the carbon chain is interrupted by O and/ or S atoms and M is a cation. The silver halide may have been fogged by light, by gold or noble metal sensitizers, sulphur sensitizers, formaldehyde, stannous chloride or thiourea dioxide, and may be of the internal latent image type or comprise silver chlorobromide grains having a surface of silver bromide. The emulsion may be of the lithographic type and may contain hardeners, stabilizers, spectral sensitizing dyes and onium salts.
Patent GB-1065459-A (GB)
Title: Improvements in and relating to semiconductor junction lasers
Inventor: COLLINS BRYAN EDWARD
IPC: H01S5/024
Filed: 1963-12-18
Abstract: 1,065,459. Semi-conductor laser devices. MULLARD Ltd. Dec. 18, 1963, No. 49999/63. Headings H1C and H1K. A semi-conductor junction laser is positioned between two electrically conductive heat sinks each having two plane parallel surfaces coplanar with the two polished parallel surfaces of the laser. As shown in Fig. 1, a semi-conductor 1 having a PN junction 4 is mounted between conductive heat sinks 2, 3. The accurately polished plane parallel surfaces 7, 8 perpendicular to the plane of the junction 4 and forming the laser resonant cavity are made coplanar with plane parallel front surfaces 9, 10 of the heat sinks 2, 3 and rear surfaces. Ohmic contacts are applied to the semi-conductor body and layers of solder are interposed between these contacts and the respective heat sinks, Fig. 2. During the manufacture of the laser the coplanar surfaces are formed by the simultaneous grinding of the semi-conductor body and the heat sink members. A reflective coating may be applied to one of the surfaces 7, 8 in the vicinity of the PN junction. In operation, the laser is placed in liquid nitrogen and the current applied to electrical leads soldered to sinks 2, 3 is pulsed. An electrically conductive expansion member may be mounted between one heat sink and the respective adjacent region of the semi-conductor body in order to compensate for differences in expansion coefficients of body 1 and heat sinks 2, 3. The body 1 may be N-type tellurium doped gallium arsenide having a P- type region formed by diffusion of zinc. Manufacture of device.-A slice of N-type gallium arsenide 6 doped with tellurium has zinc diffused into its surface to form a PN junction 4. After grinding and etching to produce a wafer of the correct area and thickness an ohmic contact 14 is made to P-type region 5 alloying a pellet of an alloy of bismuth and silver and an ohmic contact 15 is made to N- type region 6 by alloying a pellet of an alloy of bismuth, tin and platinum. The wafer is then mounted to heat sinks 2, 3 by applying a thin layer of indium 16, 17 to the surfaces of the heat sink and soldering the wafer thereto. After potting the assembly the surfaces 7, 8 of the body 1 and the copolanar front and rear surfaces of sinks 2, 3 are formed by sawing off the resin and grinding to remove material simultaneously from the sinks and body 1.
Patent GB-1281690-A (GB)
Title: Resilient mountings
Inventor: REED ALUN JOHN
IPC: F16F3/12
Filed: 1968-10-24
Abstract: 1281690 Resilient mountings DUNLOP HOLDINGS Ltd 23 Oct 1969 [24 Oct 1968] 50448/68 Heading F2S A resilient mounting 1 for a vehicle engine comprises a coil spring 12 acting between abutment members 3 and 11, a rigid sleeve 2 and an elastomeric lining 6 which extends between the spring and the abutment member 3. The lining frictionally damps the vibration of the coil spring, and the rigid sleeve restricts movement of the spring in any direction perpendicular to its axis. The abutment member 3 may be formed integral with the sleeve 2, and the abutment member 11 may be a flange on a tubular member 9 which locates the spring and serves as a bolt-hole for attaching a vehicle engine to be mounted. A portion 7 of the lining 6 may extend between the abutment member 3 and a flange 10 on the member 9 to form a rebound stop, and a portion 8 underlies a flange 4 of the sleeve 2 to act as a bump stop.